Hero trapped deep in a mine, talking to the chief engineer outside the mine via phone.

"The (water) pump is making noises."
"You're pumping against too much pressure. The pumps above you are out. Soon the pressure relief valve will open and it will be recirculating."
"Can I dog it down?"
"No, it's internal, you can't get at it."

Quote

"I could eat a handful of iron filing and puke a better design than that!!!"